Sir Martin Sorrell, Carphone Warehouse, Pret: Everything that matters this morning

Former WPP chief Sorrell set to make comeback
Former chief executive of WPP, Sir Martin Sorrell, is to become executive chairman of a new marketing company.
Sorrell, who stepped down from his role at WPP six weeks ago, is set to become chairman of a small financial holding company, which he intends to build into a “next generation marketing services group”,  Sky News reports.
The ad industry veteran is understood to be committing £40m of his own money to the new venture, w